Platform Attestation API

Method	Returns	Description
requestIntegrityToken(nonce)	Promise<string>	Play Integrity token (Android) or DeviceCheck token (iOS)

requestIntegrityToken(nonce)

requestIntegrityToken(nonce: string): Promise<string>

Parameters:

• nonce — server-generated, single-use random value (minimum 16 bytes, base64-encoded)

Resolves with a signed token string to send to your backend for verification.

Rejects with:

• INTEGRITY_NOT_SUPPORTED — running on an emulator, unsigned build, or device without Play Services
• INTEGRITY_ERROR — network error or Play Services unavailable

See the Attestation guide for server-side verification details.